1/*
2 * linux/drivers/pcmcia/pxa2xx_vpac270.c
3 *
4 * Driver for Voipac PXA270 PCMCIA and CF sockets
5 *
6 * Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/gpio.h>
15#include <linux/module.h>
16#include <linux/platform_device.h>
17
18#include <asm/mach-types.h>
19
20#include <asm/gpio.h>
21#include <mach/vpac270.h>
22
23#include "soc_common.h"
24
25static struct gpio vpac270_pcmcia_gpios[] = {
26	{ GPIO107_VPAC270_PCMCIA_PPEN,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
27	{ GPIO11_VPAC270_PCMCIA_RESET,	GPIOF_INIT_LOW,	"PCMCIA Reset" },
28};
29
30static struct gpio vpac270_cf_gpios[] = {
31	{ GPIO16_VPAC270_CF_RESET,	GPIOF_INIT_LOW,	"CF Reset" },
32};
33
34static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
35{
36	int ret;
37
38	if (skt->nr == 0) {
39		ret = gpio_request_array(vpac270_pcmcia_gpios,
40				ARRAY_SIZE(vpac270_pcmcia_gpios));
41
42		skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
43		skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
44		skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
45		skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
46	} else {
47		ret = gpio_request_array(vpac270_cf_gpios,
48				ARRAY_SIZE(vpac270_cf_gpios));
49
50		skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
51		skt->stat[SOC_STAT_CD].name = "CF CD";
52		skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
53		skt->stat[SOC_STAT_RDY].name = "CF Ready";
54	}
55
56	return ret;
57}
58
59static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
60{
61	if (skt->nr == 0)
62		gpio_free_array(vpac270_pcmcia_gpios,
63					ARRAY_SIZE(vpac270_pcmcia_gpios));
64	else
65		gpio_free_array(vpac270_cf_gpios,
66					ARRAY_SIZE(vpac270_cf_gpios));
67}
68
69static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
70					struct pcmcia_state *state)
71{
72	state->vs_3v  = 1;
73	state->vs_Xv  = 0;
74}
75
76static int
77vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
78				const socket_state_t *state)
79{
80	if (skt->nr == 0) {
81		gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
82			(state->flags & SS_RESET));
83		gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
84			!(state->Vcc == 33 || state->Vcc == 50));
85	} else {
86		gpio_set_value(GPIO16_VPAC270_CF_RESET,
87			(state->flags & SS_RESET));
88	}
89
90	return 0;
91}
92
93static struct pcmcia_low_level vpac270_pcmcia_ops = {
94	.owner			= THIS_MODULE,
95
96	.first			= 0,
97	.nr			= 2,
98
99	.hw_init		= vpac270_pcmcia_hw_init,
100	.hw_shutdown		= vpac270_pcmcia_hw_shutdown,
101
102	.socket_state		= vpac270_pcmcia_socket_state,
103	.configure_socket	= vpac270_pcmcia_configure_socket,
104};
105
106static struct platform_device *vpac270_pcmcia_device;
107
108static int __init vpac270_pcmcia_init(void)
109{
110	int ret;
111
112	if (!machine_is_vpac270())
113		return -ENODEV;
114
115	vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
116	if (!vpac270_pcmcia_device)
117		return -ENOMEM;
118
119	ret = platform_device_add_data(vpac270_pcmcia_device,
120		&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
121
122	if (!ret)
123		ret = platform_device_add(vpac270_pcmcia_device);
124
125	if (ret)
126		platform_device_put(vpac270_pcmcia_device);
127
128	return ret;
129}
130
131static void __exit vpac270_pcmcia_exit(void)
132{
133	platform_device_unregister(vpac270_pcmcia_device);
134}
135
136module_init(vpac270_pcmcia_init);
137module_exit(vpac270_pcmcia_exit);
138
139MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
140MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
141MODULE_ALIAS("platform:pxa2xx-pcmcia");
142MODULE_LICENSE("GPL");
143